45.00 mm stainless steel case,tachometer scale engraved bezel , screw-down crown, black dial, automatic self-winding COSC movement with hours, minutes, small seconds, date, chronograph's hand, 30-minute counter, and 12-hour counter, approximately 42 hours of power reserve, rubber Dunlop racing tyre 1960s design strap. Water resistant to 100 meters.